John Deere 6630 hunting at idle

[Tractortech]

Reviving old thread.
My 6920s is doing similar for the past few weeks. It’s not bad, just sounds like it’s going to cut out for a split second and then jumps back to life. Only does it on idle and only happens once every 2-5 mins or so at idle.
It never stalls, just drops rpm for a split second.

loads of power still and fine higher rpm.
Does this Denso suction valve work on the 20 series also?
Might just replace it as it’s a cheap part.
Any other possible causes of this issue?

Have you checked for error codes??

 

[Laser]

Hi Phil, yea dealer is expensive for this part, will try get a denso one on eBay if possible Most fuel lines are replaced already except the one coming from the fuel tank. Might change that one as well.
o-ring is still on the glass bowl, checked that today.

 

[kevindb880]

Bought Suction control valve from Nick Young last autumn, half the price of JD works fine.

 

[Phil P]

Bought Suction control valve from Nick Young last autumn, half the price of JD works fine.

Not sure what Nicks charging but dealer price £540! So even half that which is £270 is way to much. Last one I got which was some time ago was £90 from pump repair shop, you can get them on eBay for under £70 now.

 

[kevindb880]

Dealer quoted £800 I believe and we paid around £300.

 

[kevindb880]

Dealer quoted £800 I believe and we paid around £300.

That's for a 6630

 

[Phil P]

That's for a 6630

£63 plus postage

for John Deere Fuel Pump Suction Control Pressure Regulator Valve 20 30 series | eBay

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